Lock.



W. E. SPARKS.

LOCK.

APPLICATION FILED IULY 22. I911.

Pamnted May 4, 1915.

3 SHEETS-SHEET l.

JNVEIVTOR. Mas aram/xv m WITNESSES:

A TTORNE Y8 THE NORRIS PETERS C0 PHOTG-LITHQ. WASHING TON. D. c.

W. E. SPARKS.

LOCK.

APPLICATION FILED JULY 22. 19H.

. Patented May 4, 1915.

3 SHEETS-SHEET 2.

INVENTOR.

BAN/K WITNESSES:

A TTORNEKS THE MnQPI ur -5R5 CO, PHOTO-LITHQ. WASHINGTON. D. c,

IINTTED STATE PATENT @FFTCE.

WILLIAM E. SPARKS, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO SARGENT &

COMPANY, OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LOCK. 2

Application filed July 22, 1911.

To aZZ whom it may concern Be it known that I, WVIL IAM E. SrARKs, of the city and county of New Haven and State of Connecticut, have invented new and useful Improvements in Locks, of which the following is a full, clear, and exact description, when taken in connection with the accompanying drawings, which form a part thereof.

This invention relates to looks, and more particularly to hotel locks of the general type illustrated in the patent to Carroll, #898,434, dated Sept. 15, 1908, wherein bolts operable from the inside and outside respectively of the door are so connected that the protraction of one bolt when the other bolt is protracted will cause the retraction of said second bolt, whereupon the first bolt may be retracted independently. In locks of this character there is usually a knob operated latch bolt in addition to the two dead bolts, and an automatically operated ward is provided for blocking the operation of any key in the outside keyhole except the emergency key, when the inside bolt has been thrown.

The object of the present invention is to provide an improved arrangement of the tumblers of the respective bolts whereby the tumbler mechanism of each bolt is independently operable, and yet so related to the tumbler mechanism of the other bolt, as to effect the simultaneous release of all of the tumblers when the bolts are simultaneously moved in oppositet directions; to provide improved means for preventing the complete rotation of a key inserted from the inside, so that the inside bolt cannot be left protracted without leaving the key in the lock in position to retract said bolt immediately in any contingency; to furnish simple and effective means for deadlocking the latch bolt when the inside bolt is thrown, to indicate that the room is occupied: and to improve the construction arrangement of the ward associated with the outer keyhole; and to furnish improved tumbler mecha nism for a dead bolt, adapted to various applications.

To these and other ends my invention consists in the novel features and combinations of parts to be hereinafter described and claimed.

In the accompanying drawings, Figure 1 is a side view in elevation of the lock with Specification of Letters Patent.

Serial No. eaaeez.

Fig. 5, a view of the lower part of lock with the main tumblers removed and inside bolt protracted; Fig. 6, a view similar to Fig. 5 with outside bolt protracted; Fig. 7 a reverse view of Fig. 5; Fig. 8, a reverse view of Fig. 6; Fig. 9, detail of coupling lever; Fig. 10, detail of movable ward; Fig. 11, cross section of-tumblers for the outside bolt; Fig. 12, detail of stop tumbler for lower bolt; and Figs. 13, 14 and 15, detail of keys employed for this look.

In all figures, similar letters of reference represent like parts.

Referring to the drawings, 1 indicates the face plate of the lock and 2 the casing. In the upper part of the casing is slidably mounted a latch bolt 3 having a shank 4., provided with a head 5, which bears at its lower part against a stop 6, and at its upper part is adapted to be engaged by a shoulder of the sliding yoke 7 This yoke is preferably engaged by the wings 8 of a hub 9 which is adapted to receive the spindle of a suitable knob, not here shown. The knob yoke is pressed toward the front of the casing by means of a coiled spring 10 surrounding the pin 11 held between the front plate of thecasing and a stop member 12. Below the latch bolt is slidably mounted a deadbolt 13 having a shank 14: and a neck 15 joining the shank and the head of the latch bolt, so as to thereby leave a shoulder 16 projecting into the line of movement of the head of the latch bolt and adapted to provide a deadlocking device for said latch bolt when the dead-bolt is protracted. Pivotally mounted on the shank of the dead-bolt 13 is a tumbler 17 having a spring 18 which bears against a lug 19 on the bolt and forces a lug 24 on the tumbler normally into engagement with a tumbler stump 2O projecting from the base of the casing. The shank of the bolt 13 is provided with the usual talons 21 and with an integral depending curved dog 22. The function of the dog is to prevent the complete rotation of a key inserted in the inside keyhole 23 to protract the bolt Patented m a, 1915.

V 13, so that said bolt cannot be left protracted ing lug 24 the tumbler 17 is provided with a projecting lug 25 presenting a shoulder rounded off at its forward part. This lug is adapted to contact with a lug or other projection 26 extending horizontally outward from a bolt operated, connecting lever 27, pivoted at 28, and having its upper arm extending into a raised or slotted portion in the under surface of the shank of the bolt, and projecting into the path of movement of a shoulder 29 (see Figs. 7 and 8) carried on said under surface of the bolt, whereby during protraction of the bolt 13 said shoulder is adaptedto move against the arm of the lever, to thereby actuate said lever, and during retraction of the bolt the lever will be unaffected by the movement of the bolt during the greater portion of the return movement of said bolt until a downwardly projecting lug 30 at the forward end of the.

slotted portion of the bolt strikes against the front edge of the arm and retracts the lever to its normal position. In such normal position, the lower arm of the lever is substantially vertical, with the projection 26 in the recess formed between the shoulder 25 of the tumbler 17 and a depending vertical arm 31 formed integral with the tumbler. The bolt 13 is adapted to be operated di rectly only by a key inserted through the inside keyhole, and in the independent and direct operation of such bolt the connecting lever 27 merely rocks idly on its pivot. In the protracted movement of the bolt, the projection 25 of the tumbler strikes against the projection 26 of the lever, forcing the lower arm of the lever backward against a shoulder 32 of a lower bolt 33, (see Figs. 5' and 6) hereinafter designated the outside bolt, so that when the lower arm of the lever is thus carried against the shoulder the lower bolt upon its protraction will be forced immediately against the lower arm of the lever and thus rock the lever on its pivot. The protraction of the inside bolt 13 also serves by the engagement of the lug 30 and a similar lug 34 with the end of a pivoted ward-35 to rock said ward on its pivot so as to carry its foot 36 into the, path of movement of any key inserted through the outside keyhole 37, through which keyhole keys for directly operating the outside bolt 33 are adapted to be inserted. The pivoted ward lever 35 extends from its slotted connection 30, 34 with the inside bolt, completely across the outside bolt, as shown, and its lower end portion adjacent the Ward portion 36 and below the pivot 35 is adapted to abut a lug or flange J33 formed on and extending backward from the rear portion of the bolt 33, as shown in Figs. 7 and 8.

The outside bolt 33 is provided with slots 38 adapted to engage fi-xed guiding posts projecting from the base of the casing. ,On one of these posts 39 is pivotally supported ,a series of tumblers 40 having curved slots 41 adapted to engage a post 42and having springs 43 which bearv against a post 44 and press said tumblers normally in a clockwise direction. These tumblers 40 bear upon a tumbler member 45 (see Fig; 12) which is pivoted on the same post as the other tumblers, but is normally spring pressed by its individual spring 46 in an opposite direction to that of the tumblers 40. The tumbler member 45 is provided with a projecting lug 47 011 its edge against which is adapted to bear the shoulder or shoulders 48 of one or more of the tumblers 40, whereby said tumbler 45 is limited in its anti clockwise movement by the engagement with said tumblers 40 and is normallyheld by such engagement and by the pressure of its own spring with a tooth49 on its rim in line with and opposinga stop lug 50 carried by a pivoted bolt locking, and releasing member 51. The member 51 is so pivoted that its lug 50 moves in an arc, the circle of which intersects the circle of "movement of the tumblers 40 and 45. The edge of the tumbler 45 is provided on each side of the tooth 49 with a slot or recess 52 into which the lug 50 of the bolt locking and releasing member 51 is permitted to enter when the tumbler 45 is rocked either to the right or to the left to bringeither of said notches or slots into registry with the said lug 50. The member 51 is provided with a projecting tumbler stump 52 adapted to engage a lug 53; on the bolt 33 formed bya slot in saidboltto accommodate the tumbler stump 52. Whenever one of the slots or notches 52 of the stoptumbler 45 is brought opposite to or in register with the lug 50 of the locking member or racking piece 51, said lug 50 may be freely swung into the aforesaid slot or notch 52 by the contact of the lug 53 on the moving bolt with the tumbler post 52, as will be understood. In this operation, the lug 50 of the racking piece will move into a series of normally alined notches 40 formed in the tumblers 40 and adapted to register with either of the notches 52 of the stop tumbler 45. The tumblers of the outside bolt, in having their notches 40 normally in line for cooperation with the lug 50 of the racking piece, provide for a release of the outside bolt 33 simply by a slight swinging movementof the stop tumbler 45 when the outside bolt is actuated indirectly by the inside bolt, as hereinafter described, but when the outside bolt 33 is actuated by a' key inserted in the outside keyhole, the tumblers 40 will only release said bolt when they have been moved by the key to such angular positions that other notches 40 normally out of register, are brought into register with each other and with the lug 50 of the racking piece, as more particularly described hereinafter.

The stop tumbler 4:5 is provided with an outwardly projecting lug 54 extending into the line of movement of the lower end of the vertical arm 31 of the inside tumbler 17. The object of the means of engagement between the tumbler 17 and the stop tumbler 45 of the outside bolt is to permit the former to move the latter tumbler to released position when the inside bolt is protracted from the inside while the outside bolt is in protracted position. In efiecting such operation the tumbler for the inside bolt will be rocked upon its pivot by the movement of the key. In such rocking movement the lower end of its vertical arm will be carried against the outward projection 54 of the stop tumbler 4L5 momentarily so as to tilt the stop tumbler beyond its pivot and carry its forward edge notch 52 into registry with the lug 50 of themember 51, thus permitting said lug to enter said notch and enabling the lower outside bolt to be retracted. A change or guest key 55 is shown in the drawings and is adapted to be employed either for the outside or the inside keyholes, and 56 and 57 are respectively master maids, and master grand keys designed for the use of the maids or the housekeeper, While 58 is an emergency key adapted for the use of the proprietor. The movable ward 35 which is carried into the path of movement of the keys of the outside keyhole by the protraction of the inside bolt is adapted to prevent the complete insertion from the outside of either the keys 56 or 57 but the key 58 is bitted so that it may pass the ward 35 and engage the tumblers at any time so as to protract and retract the outside bolt.

The operation of the device is as follows: To lock the door from the inside the guest key 55 is inserted through the inside keyhole 23 and the key turned, whereupon the tumbler 17 will be released from its tumbler post and thebolt 13 will be protracted carrying the shoulder 16 against the inner side of the head of the latch bolt, thus deadlocking the latch bolt and through the latch bolt deadlocking the hub of the knob, whereby the fixed position of the knob serves to indicate to the maid that the room is locked on the inside. At the same time, the dog 22 carried by the bolt 13 is moved into the path of movement of the key, so that the key 55 cannot be withdrawn from the keyhole without retracting the bolt. The protraction of the. inside bolt always carries the movable ward 35 into the path of the outside keyhole, so as to prevent the insertion of any key therethrough, except the emergency key. Such protraction also serves to rock the connecting or coupling lever 27, so that the end of the lower arm of the same shall be carried into contact with the shoulder 32 of the outside bolt 33 ready to be pressed against by said shoulder when the lower bolt is protracted. The shoulder 25 of the tumbler 17 will also be carried into contact with the projection 26 of' said connecting or coupling lever, so that said projection will be in a position to move said tumbler to release position when the lower arm of the lever is pushed forward. When both bolts are in retracted position and the outside bolt is protracted directly from the outside by the guest key, or any of the other keys, the tumblers 40 will be so moved by the proper key as to carry the notches 40 in their edges into registry with the lug 50,

of the lever 51, and this movement anticlockwise of the tumblers 40 will permit the spring of the stop tumbler 45 to carry said tumbler in the same direction so as to bring its right hand notch 52 into registry also with the said lug 50, whereupon on the continued pressure of the key against the talons of the bolt said bolt will then be free to rock its releasing member 51 on its pivot, the lug 50 then passing into the notches in the tumblers, and the bolt may then be protracted by the further movement of the key. In this operation the connecting lever 27 will be moved slightly to the left, as shown in Fig. 4, without, however, affecting the tumbler mechanism of the inside bolt 13.

l/Vhenever the inside bolt is protracted, as before stated, it will be impossible to insert either the key 56 or the key 57, but in some cases it may be desirable to be able to un lock the door from the outside, even when it is locked on the inside, as in the event of some accident to the occupant of the room. For this purpose, the emergency key 58 is provided which is so bitted as to pass the movable ward and engage the tumblers and protract the outside bolt. To unlock the door from the outside by means of this key when the inside bolt is protracted the emergency key is inserted and turned, which will rack the tumblers 40 and 45 until their notches register with the stop lug of the locking lever 51, which permits the bolt 33 to be protracted. In such protracted movement of the bolt the shoulder 32 of the bolt will press against the lower arm of the lever 27 which will thereupon be rocked on its pivot so as to first carry its projecting lug 26 against the shoulder 25 of the tumbler 17 thus rocking said tumbler and releasing the same from its tumbler stump At the same time, the movement of the outside bolt 33 toward the right with reference to Figs. 7 and 8, will cause the flange 33" on said bolt to engage the lower portion of the ward lever, 35, thereby rocking said lever on its 35. normally alined notches 40 of the tumblers onedirection, whereas when said bolt is retracted from the inside of the door, the stop pivot 35 in such a manner as to retract the released inside bolt 13 by the-engagement of the upper end of the lever 35 with the lug 30 on said bolt 13. Hence when the'inside bolt is protracted and the outside bolt is re tracted the protraction of the outside bolt will cause the release of the tumbler 17 of thev inside bolt by means of the connecting lever 27, and by the time the outside bolt is fully protracted by the emergency key, the inside bolt will be fully retracted by the lever 35. The emergency key is then turned in reverse direction so as to retract the out side bolt alone, whereupon the door will be.

through the inside keyhole and turned, whereupon the first action to take place willbethe rocking of the tumbler 17 upon its pivot so as to carry the lower end of its vertical arm 31 into contact with the projection 54 of the stop tumbler 45 which rocks the latter on its pivot sufficiently to carry its left-hand notch 52 into register with the lug 50 of the racking piece 51. As the stop tumbler 45 is the only member normally preventing the retraction of the outside bolt by cooperation of the lug 50 with the 40, and as said stop tumbler is thus moved to releasing position by direct engagement with the tumbler of the inside bolt 13, the outside bolt will be freed for retraction, and as the inside bolt 13 is moved by its key into protracted position, the outside bolt will be simultaneously moved to retracted position by means of the lever 35, the upper end of which will be moved to the right with reference to Fig. 8, thereby moving the lower end of said lever to the left and consequently forcing the lug 33 on the outside bolt to the left to retract said bolt. It will be understood that when the outside bolt is actuated by the key, the tumblers 40 and the stop tumbler 45 will move together in tumbler will be shifted individually and in theopposite direction, the tumblers 40 remaining stationary.

From the foregoing description it will be apparent that while the tumblers of the respective dead bolts are arranged to be released simultaneously, they are also capable of independent operation. When the out side bolt is in protracted position andthe inside bolt is in retracted position the tumbler of the inside bolt directly engages the retracted position andthe inside bolt is in V protracted position, there is no direct engagement between the tumblers. of the respective bolts and in this case the connecting lever 27 is called into play which, being rocked on its pivot by the protraction of the outside bolt, raises and releases the tumbler 17 of the inside bolt as previously explained. Thus when one bolt is in retracted position, there is a direct co'clperation of the two tumbler mechanisms as said bolt is protracted, but when said bolt is in protracted position an intermediate connecting lever or its equivalent must be called into play to release its tumbler mechanism. In addition to this function of releasing the tumbler mechanisms of one of the bolts, the lever 27 assists to a certain extent the operation of retractingone bolt. when the other isprotracted, although the lever 35 is completely ance of the lever 27. In the embodiment shown, when the outside bolt is in protracted position and the inside bolt is inf retracted position, the lever 27 will be idle the protracting movement of the inside bolt, but as saidbolt moves to fully protracted position the lug '29 thereon moves forcibly into engagement with the upper end of the lever 27, as shown in Fig. 7, therebyforcing the lower end of said lever 27 against the shoulder 32 of the outside bolt in order to assist in the retraction of said outside bolt during the latter part of the retracting movement. On the other hand, when the inside bolt is in protracted position and the-outside bolt is in retracted position, the

protraction of the outside bolt causes the shoulder 32 to abut the lower arm of the lever 27, and the upper end of the lever 27 in moving toward the left with respect to Fig. 7 will abut the lug 29 on the inside bolt and force said bolt back intothe casing to a certain extent. Hence it will be manifest that the lever 27 not only forms an operative connection between one bolt and the tumbler without digressing from the scope "of my" invention as defined in the claims.

I- do not claim broadly herein a lock construction embodying a bolt, a pluralityof tumblers therefore, including a stop tumbler movable in either of two directions to release the bolt, a key for protracting the bolt from one side of the door by moving said stop tumbler with the other tumblers in one direction, and means to actuate said bolt from the opposite side of the door, by shifting the stop tumbler individually in the opposite direction; nor do I claim other matters claimed in companion application, Serial No. 639,961, filed of even date here-' with.

Having thus described my invention, what I claim is 1. In a lock, two dead bolts, means of connection between said bolts whereby the protraction of one retracts the other, independently operable tumbler mechanisms for the respective bolts, and means intermediate said bolts to release the tumbler mechanism of one bolt as the other bolt is operated; substantially as described.

2. In a lock, two dead bolts, means or" connection between said bolts whereby the pro traction of one retracts the other, independently operable tumbler mechanisms for the respective bolts, and a member actuated by the protraction of one of said bolts to release the tumbler mechanism of the other bolt; substantially as described.

3. In a lock, two dead bolts, connecting means between said bolts whereby one is retracted as the other is protracted, independent tumbler mechanisms for the respective bolts, and an intermediate lever operated by one of said bolts in the protraction thereof to release the tumbler mechanism of the other bolt; substantially as described.

4. In a lock, two dead bolts, connecting means between said bolts whereby the protraction of one retracts the other, independent tumbler mechanisms for the respective bolts, and a lever pivoted to the case intermediate said bolts and oscillated by direct engagement with one of said bolts, said lever having a projection to engage the tumbler mechanism of the other bolt and thereby release the same; substantially as described.

5. In a lock, two dead bolts, and inde pendently operable tumbler mechanisms for the respective bolts, one of the tumblers of one of said bolts being movable, upon its release, into direct engagement with a tumbler of the other bolt to release said latter tumbler; substantially as described.

6. In a lock, two dead bolts, connecting means between said bolts whereby the protraction of one retracts the other, and independently operable tumblers for the respective bolts, one of said tumblers bein engaged and released by the other tum ler; substantially as described.

7. In a lock, two dead bolts, an independently operable tumbler for one of saidbolts,

and an independently operable tumbler for the other bolt, which when released engages the tumbler of the first bolt and releases the same; substantially as described.

8. In a lock, a plurality of dead. bolts, a pivoted tumbler for one of said bolts, and an independently operable pivoted tumbler for the other bolt, which engages said first tumbler and releases the same; substantially as described.

9. In a lock, an inside bolt, an outside bolt, a tumbler for the outside bolt, and a tumbler for the inside bolt having a position in which it engages said first tumbler; substantially as described.

10. In a lock, an inside bolt, an outside bolt, a tumbler for the outside bolt fixed relatively to the case, and a tumbler carried by the inside bolt and adapted to engage the first named tumbler to release the same; substantially as described.

11. In a lock, two dead bolts, a tumbler 'for one of said bolts fixed relatively to the case, and a tumbler for the other bolt movable bodily with said other bolt and having means to engage the first named tumbler when such other bolt is in retracted position.

12. In a lock, a dead bolt, a pivoted tumbler therefor fixed relatively to the case, a second dead bolt. and a tumbler pivoted on said second dead bolt, and having a projection which lies in proximity to said first tumbler when said second bolt is in retracted position, said second tumbler on its release being movable into engagement with said first tumbler to release the same; substan tially as described.

13. In a lock, two dead bolts, tumblers for the respective bolts having releasing engagement with each other when oneof said bolts is in retracted position, and means to release the tumbler of said firstbolt when the latter is in protracted position; substantially as described. 1

14. In a lock, two dead bolts. tumblers for the respective bolts. one of said tumblers when its bolt is in retracted position being directly operative upon the other tumbler to release the same as the first tumbler is released, and means interposed between said first tumbler and the other bolt to release said first tumbler as such other bolt is operated; substantially as described.

15. In a lock, two dead bolts, tumblers for the respective bolts, one of said tumblers when released to p-rotract its bolt being movable to engage and release the other tumbler, and means to release said first tumbler when its bolt is in protracted position; substantially as described.

16. In a lock, two dead bolts, a lever connection between said bolts, tumblers for the respective bolts, one of said tumblers when released being operative to engage and release the other when said bolts occupy a prei as" described.

determined relative position, and special means to release said first tumbler when said bolts bear a reversed relation to each other; substantially as described.

17. In a look, a plurality of dead bolts, independently operable tumblers for the respective bolts, one of said tumblers being directly operative on the other when the bolt of the first tumbler isin retracted position, and means operative by the protraction or the other bolt to release, said first tumbler when its bolt is in protracted position; substantially as described.

18. In a lock, an inside bolt, a tumbler therefor, an outside bolt, a tumbler therefor, the tumbler of the outside bolt being directly releasable by the tumbler of the inside bolt as said inside bolt is moved from retracted to protracted position, and means actuated protracted position, and a connecting device interposed between the other bolt and said first named tumbler whereby the protraction of said other bolt releases the tumbler of said first bolt when the latter is in protracted position; substantially as described.

20. In a look, a case having a face plate, a dead bolt in said case adapted to project through said race plate, a plurality of tumblers for said bolt fixed relatively to said case, a key to operate said bolt rrom one side of the door by the joint actuation of said tumblers, and means within the case operable from theother side of the door to operate said bolt by the actuation of a less number of tumblers; substantially as described. v

21.'In a lock, the combination of two bolts, a series of keys for operating one of said bolts, and a connecting member for said bolts having provision for blocking one of said keys without interfering with the operation or another key; substantially as described. 7

22. Ina lock, two bolts,.a tumbler for one of said bolts, and a tumbler for the other bolt, said tumblers being relatively movable to assume aposition in which one, when actuated, will release the other; substantially 23. In a lock,'two bolts, a keyhole for one of said bolts, and a member so connecting said bolts that the protraction or one retracts the other, said member carrying a ward movable with respect to said keyhole; substantially as described.

24. In a lock, an inside bolt, an outside bolt, a keyhole for one of said bolts, a series of keys to operate said bolt by way of said keyhole, and a member so connecting said bolts that the protraction of one retracts the other, said member having a ward portion operative in one position to permit a complete rotation of one key in said keyhole but to prevent such a rotation of another key; substantially as described.

25. In a lock, an inside bolt, an outside bolt, a keyhole for the outside bolt, and a lever so connecting said bolts that the protraction of one retracts the other, said lever carrying a ward movable toward and away from said keyhole; substantially as described.

26. In a look, a plurality of bolts, a plurality of keys for operating one of said bolts, and a connecting member for said bolts having a position in which it blocks the operation of at least one of said keys; substantially as described.

27. In alock, a key-bolt, a keyhole therefor, a key to operate said bolt, and a projection or dog integral with the rear end or said key bolt to prevent the withdrawal of the key from the keyhole except when said bolt is in retracted position; substantiallyas described.

28. In a lock, a case having a keyhole, a dead bolt insaid case, a plurality of tumblers for said dead bolt, movable to a predetermined releasing position by a key inserted in said keyhole, said tumblers nor mallylying in another releasing position, a member in the case to prevent normally the release of the bolt with said tumblers in said second releasing position, and means in the case, operable from the exterior thereof, to

shift said member to release the bolt; substantiallyas described.

29. In a lock, a case having a keyhole, a dead bolt in said case, a plurality of tumblers for said dead bolt, movable to a premally lying in another releasing position, a F

member in the case to prevent normally the release of the bolt with said tumblers in said second releasing position,'and a pivoted member in the case to engage and operate said member; substantially as described.

30. In a look, a case having a keyhole, a dead bolt in said case, a plurality of tumblers for said dead bolt movable to a predetermined releasing position by a key inserted in said keyhole, said tumblers normally lying in another releasing position, a member in the case to prevent normally the release of the bolt with said tumblers in said second releasing position, and a tumbler operable from the side of the'c'ase opposite said keyhole and having means to engage and operate said member; substantially as described.

31. In a look, a case having a keyhole, a dead bolt in said case, a plurality of tumblers for said dead bolt movable to a predetermined releasing position by a key inserted in said keyhole, said tumblers normally lying in another releasing position, a member in the case to prevent normally the release of the bolt With said tumblers in said second releasing position, and means to retract said bolt from the side of said case opposite said keyhole, including a member in the case to shift said release preventing member into an inoperative position; substantially as described.

32. In a look, a case having a keyhole, a dead bolt in said case, a plurality of tumblers for said bolt jointly releasable by a key inserted in said keyhole, and means for retracting said bolt from the side of the case opposite said keyhole, including a member in the ca se to release the bolt by shifting only one of said tumblers; substantially as described.

33. In a lock, the combination of a case having a keyhole at one side, a dead bolt in said case, a plurality of tumblers for said dead bolt jointly operable by a key inserted in said keyhole, and means, including a member pivoted in the case, to retract said bolt by the individual operation of one of said bolt tumblers substantially as described.

34. In a lock, a case having a keyhole at one side, a dead bolt in said case, a plurality of pivoted tumblers for said dead bolt movable to a predetermined releasing position by a key inserted in said keyhole, said tum blers normally lying in another releasing position, a stop tumbler in the case to pre vent normally the release of the bolt With said tumblers in said second releasing position, and means to retract said dead bolt from the side of the case opposite said keyhole, including a member to engage said stop tumbler and shift it into an inoperative position; substantially as described.

35. In a lock, a case having a keyhole at one side, a dead bolt in said case, a tumbler for said bolt movable to a predetermined releasing position by a key inserted in said keyhole, said tumbler normally lying in another releasing position, a second or stop tumbler to prevent normally the release of the bolt with said first tumbler in the second named releasingposition, and means to retract said bolt from the side of the case opposite to said keyhole, including a member pivoted in the case and engageable With said stop tumbler to shift the latter into an inoperative position; substantially as de I scribed.

36. In a lock, the combination of a dead bolt, a plurality of tumblers for said dead bolt movable in the same direction to release said dead bolt and permit the protraction thereof from one side of the door, and means to retract said bolt from the opposite side of the door, including a member in the case to engage one of said tumblers and shift it individually; substantially as described.

37. In a lock, the combination of a dead belt, a plurality of tumblers for said dead bolt movable in the same direction to release said dead bolt, and permit the protraction thereof from one side of the door, and means to retract said bolt from the opposite side of the door, including a member in the case to engage one of said tumblers and shift it individually in a direction opposite to the first named joint releasing movement of said tumblers; substantially as described.

38. In a lock, the combination of a case, a bolt in said case, tumbler mechanism for said bolt, including a tumbler movable in either direction to release the bolt, a key. to move said tumbler in one direction, and a member in the case to move said tumbler in the opposite direction; substantially as described.

89. In a lock, the combination of a case, a bolt in said case, a tumbler mechanism for said bolt, including a tumbler movable in either direction to release the bolt, a key to operate said tumbler from one side of the door, and an actuating member for said tumbler mounted in the case and movable from the opposite side of the door: substantiall as described.

40. In a lock, the combination of a bolt, and tumbler mechanism for said bolt, including a pivoted bolt locking and releasing member 51 having a lug 50, and a stop tumbler 45 having a teeth 49 to block said lug 50, said tumbler 45 having recesses or notches 52 on opposite sides of said tooth; substantially as described.

41. In a lock, two dead bolts, tumblers therefor, and a releasing device for one of said tumblers so arranged With respect to said bolts as to move one in one direction When the other bolt is moved in the opposite direction; substantially as described.

42. In a lock, two dead bolts, tumblers therefor, and a releasing lever for one of said tumblers so arranged With respect to said bolts as to move one in one direction when the other bolt is moved in the opposite direction; substantially as described.

43. In a lock, two dead bolts, tumbler mechanism therefor, and a tumbler releasing device so connecting'said bolts that the movement of one in one direction moves the other in the opposite direction; substantially as described.

44. In a look, a dead bolt having a slot, a second dead bolt having a shoulder, tum blers for the respective bolts, a connecting lever for said bolts cooperating at opposite ends with said slot and said shoulder re spectively, and means on said lever for engaging and releasing the tumbler of one bolt as the other bolt is protracted; substantially as described.

45. In a lock, two dead bolts, tumblers therefor, a lever so connecting said bolts that the protraction of one retracts the other,

and a tumbler releasing device which assists said lever in effecting the reverse movement of said bolts; substantially as described.

16. In a lock, two dead bolts, tumblers therefor, means so connecting said bolts that the protractionof one will retract the other, one of said tumblers being arranged to engage and release the other when said bolts have a certain relative arrangement and said first tumbler is released, and a member intermediate said bolts to release said first tumbler when the bolts occupy a reversed relation'to each other, and so connecting said bolts as to assist the action of said first con- 17. In a lock, the combination with a plurality of bolts, of a tumbler for each bolt.

independently operable, and means carried by said tumblers for operative engagement upon the protractionof one bolt when the other bolt is in protracted position, substantially as described.

48. In a lock, the combinationwith a plurality of bolts, of a tumbler for each bolt independently operable, one of said tumblers being movable bodily with respect to the other, and means to operate one of said tumblers by the other, substantially as described. -49. In a lock, the combination witha plurality of bolts, of a tumbler for one bolt bodily movable-therewith, a tumbler for the other bolt, means of relative bodily movement between the second bolt and its tumbler, and means to releasev one tumbler by the other, substantially as described. 7 '50. In a lock, the combination with a plurality of bolts,-of a tumbler for each bolt independently operable, a member operable Copies of this patent may be obtained for live cents each, by addressing the Commissioner of Patents.

by one bolt upon itsprotraction for retract;-v ing the second bolt, and means for engagement between said tumblers for retracting the first bolt upon the protraction of the second bolt, substantially as described.

51. In a lock, the combination with a cas- 7 ing, of a plurality of bolts, a separate independently operable tumbler mechanism for each bolt, a connection'between said bolts for retracting either boltupon the protrac- 7 tion of the other bolt, each bolt being retractable independently of the other bolt by its own operating mechanism, and means for synchronously releasing said tumblers for engagement with their respective bolts upon the protraction of one bolt when the other bolt is in protracted position, substantially as described. 7

52. In a lock, the combination with a plurality of bolts, of a pivoted and bodily slidable tumbler for one bolt and a merely pivotal tumbler for the other bolt, a movable stop for the latter tumbler, and means car ried by the first tumbler to move the second tumbler into release position, substantially as described.

53. In a lock, the combination with a bolt, of a plurality of tumblers, a spring pressing one of said tumblers in one direction and springs pressing the other tumblers in the other direction, means of connection between said tumblers to balance sald first tumbler in a midway position, a cooperating tumbler,

having astumpengaging said bolt, stop means between said'last named tumbler and I Washington, D. 0. 

